The second run of MTV’s Teen Mom kicked off last night as a new bunch of 16 And Pregnant stars - Jenelle, Kailyn, Chelsea and Leah - returned to our screens to share the next stage in their stories.

Here's what they've been up to since giving birth and a glimpse at what happened last night...

Leah
She's a single mom to twins Ali and Aleeah after splitting with boyfriend Corey after he found out she cheated on him with Robbie. She's been taking care of the girls herself while also finishing high school but admits that she wants Corey back in her life and their family to be together again. She invites him to her graduation ceremony but is devastated when he fails to turn up or contact her beforehand. Nevertheless, she extends an invitation to dinner in honour of what would have been their anniversary and it turns into an emotional night. He admits he wants to work things out for the sake of their kids but thinks they need time, while she begins to cry when she recounts how hard it was being 17 and coping with everything that was happening in her life. She ices a cake with a loving message and 'Happy Anniversary' written on it and gives him a card which says, 'You're the one', which reduces him to tears too. He wraps up their night by taking the girls with him leaving an upset Leah lying on her bed.

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Kailyn
She's been living with boyfriend Jo's parents and their son Isaac and is currently holding down a part-time job while preparing to start college. However, her relationship with Jo is deteriorating and he eventually decides they'd be better off separating and living apart. He thinks she takes advantage of him and doesn't appreciate him while she thinks he is controlling (they argue over how many miles she can drive in his car). Kailyn doesn't want to return to her mom's house so she asks Jo's mom if she can stay with them anyway. She agrees that Kailyn and Isaac can have the basement room, although Jo isn't happy. Kailyn is also uncomfortable about the situation, telling friends it's awkward and sometimes she can't wait to go to work just so she can leave the house. “Things would be so much easier if we were together,” she adds. “I didn’t picture us breaking up.” However, she finds that one benefit of work is making new friends, including a guy called Jordan who seems interested in a date. “Maybe,” she replies.

Chelsea
Former cheerleader Chelsea is continuing to get support from her parents but her relationship with ex-boyfriend Adam is less successful. She recounts their “horrible” break-up and says they only talk when he sees their daughter Aubree once a month. She’s currently finishing high school at home while living in her own place with best friend Megan (paid for by her dad as long as she studies). She admits regret that Aubree will never grow up with both parents but suggests she might find someone new who can take care of them. She doesn't have to wait long as school friend Chris is eager for a date. Unfortunately, it doesn't go to plan as he spends more time staring at the game on TV and she is busy texting Megan. "The date was a bust," she says. “It makes it clear that being a mom and dating will be a lot harder than I thought,” she concludes. She later tells her dad that she misses Adam, although he thinks she misses the concept of Adam rather than actually missing him. She says it’s hardest when she is home alone and sometimes she can’t see herself ever getting a boyfriend. Her dad promises she will never be alone.

Jenelle
She thought her ex-boyfriend Andrew (who is currently modelling in China) would help raise Jace but he's "dropped off the planet" since their split (although paying child support). She wants to be a good mom and also enjoy her social life (and thinks she can do both successfully) but that's causing massive problems between herself and her mother who thinks she should always be home with the baby. They constantly clash over his care and Jenelle's partying, with tensions eventually boiling over in a huge argument which sees Jenelle physically shoving her mom out of the room. Her mom warns the police will be called if Jenelle stays, so the teenager goes to stay with friends. However, she misses Jace and decides to visit the house after having no success phoning her mom. The visit doesn't go as planned as she is immediately served with court papers in the driveway. Her mom is seeking custody. “I’m going to f**king kill her!” shouts Jenelle. “I swear to God…” She storms into the house and tells her mom she'll never get custody. A huge verbal battle ensues which eventually spills into the street as neither party wants to back down and continue hurling insults at each other. Eventually Jenelle leaves as her mother warns she will see her in court.